Metallic curb.



No. 688,85l. 1 Patented Dec. l7, l90l.

J. N. HARRISON.

METALLIC CURB.

plication filed Mar. 9, 1901) N 0 M 0 d B I.)

wmll I11 5 n; WWW"- rrn fra'rns JOHN N. HARRISON, OF OTTAWA, KANSAS.

METALLIC CURB.

SEEGIFECATION forming part of Letters Patent No. 688,851, dated December 17, 1901. Application filed March 2, 1901. Serial No. 49,647- (No model.)

To all whom it may concern:

Be it known that I, JOHN N. HARRISON, a citizen of the United States, residing at Ottawa, in the county of Franklin and State of Kansas, have invented certain new and useful Improvements in Metallic Curbs, of which the following is a specification.

The invention relates particularly to the construction of a cast-iron curb forthe purpose of displacing the ordinary wood or stone curbings of common use, all of which will more fully hereinafter appear.

The principal object of the invention is to provide a simple, economical, and efficient new article of manufacture, such as a castiron curbing, to take the place of the ordinary wooden or stone curbing of common use; and. the invention consists in the features, combinations, and details of construction hereinafter described and claimed.

In the accompanying drawings, Figure 1 represents a cross-sectional view of a curb constructed in accordance with my improvements as it appears when in use; and Fig. 2, a perspective view of the curb, showing the method of interlocking adjacent portions to form a continuous curb.

In the art to which this invention relates it is well known that the ordinary stone curb as now commonly used on the market is very expensive in that it has first to be quarried,

then cut into desired sizes, and then shipped to the place of use, where it has to be chipped, trimmed, and dressed in order to get it into alinement with the adjacent stones forming the curb line and provide for the desired grade. It is also Well known that stone curbs are not only very expensive, but are liable to displacement in that there is no convenient Way of anchoring, them in position.

The principal object of my invention therefore is to provide a cast-iron curb that can be used in the place of a stone curb and will be far preferable in that it is less expensive to make, can be anchored into position by the pavement,interlocked with the adjacent curb portions, and easily replaced at any time desired, all of which will be appreciated by those skilled in the art.

In constructing a curb in accordance with my improvements I prefer to make it of castiron in thatit does not oxidize or rust as quickly as wrought iron or steel and is far cheaper to manufacture. This curb is composed of a vertical web portion a of the desired length, width, and thickness and forms the curb proper-that is, forms the limiting element of the roadway.

To anchor the curb in position, the lower lateral edge thereof is provided with an integral flange extending inwardly at Z) and out wardly at c, the outwardly-extending flange passing under the pavement of the roadway, so as to-be anchored in position. The flanged portion 1) also extends inwardly and under the dirt portion of the sidewalk, where it serves also to assistin anchoring the curb in position.

In order to provide a finish for the curb and give it a more ornate appearance, as well as to provide for chipping or breaking, the upper lateral edge portion is provided with an inwardly-extending flange d, which may be laid on top of the ordinary stone, cement, or wooden sidewalk, or such stones as form the sidewalk maybe cut out to receive this flange and present an even surface to pedestrians.

To provide for as strong a curb as possible with the least amount of material and also for the interlocking of the adjacent portions that form the continuous curbing, vertical flanges e are provided, which connect the upper and lower inwardly-extending flanges b and d, and which not only serve to strengthen the curbing, but also to minimize the danger of warping of the different parts during the process of casting. To provide for the interlocking of adjacent portions, each of these ver tical flanged portions is perforated, as at f, and into these perforations are placed the reduced portions of shouldered dowels g, which are also made of cast-iron and serve to firmly interlock the adjacent curbs together to form a continuous curb. At the juncture of adjacent perforations in the upright flanges the adjacent flanges are separated to admit the shoulder portion 7.: of the dowel 9 between them. To accomplish this, the web and. upper and lower flange of each curb-section is provided with extending ends I, which extend beyond the upright or perforated flanges, and thus admit the shoulders of thedowels between the perforated flanges when the curb sections are in place. Thus each section of l the curb is held in place laterally by the ad jacent section and transversely by the dowels, and this arrangement enables the curl) to be placed in position, the curb-sections fastened together and removed without access to the side next to the ground, dispensing with the necessity of using bolts to hold the curb-sections together.

In use bricks h are laid flatwise and crosswise on the curb-line at the desired depth and about four feet apart the entire length for which the curb is to be laid. The iron curb is then laid thereon, as shown particularly in Fig. 1, and the bricks act to give it a temporary support at first and afterward when the roadway is laid to furnish a permanent curb support or bearing. The roadway is next laid and may be formed of either a concrete or macadam lower portion overlapping the lower flange and with an upper top dressing of brick i, or it may be made in any desired or usual way, as the improved curb is capable of being used with any kind of roadway or pavement.

The principal advantages of a curb constructed in accordance with my improvements are that it is practically indestructible, in that it does not absorb moisture, which is liable to freeze and crack, as do the ordinary and cheaper grades of stone. It is cheaper to'handle, in that it does not require labor to set it up in position. Each piece that forms the curb is locked to the adjacent piece to form a continuous curb, so that it is less liable to displacement than the ordinary curb, and, further, it is very economical to construct in the first instance.

I claim- 1. As a new article of manufacture, an integral cast-iron curb composed of a vertical web portion an inwardly-extending flange at its upperlateral edge inwardly and outwardly extending flanges at its lower lateral edges and inwardly-extending vertical end flanges to join the upper and lower inwardly-extending flanges together and provided with perforations for the insertion of interlocking dowel-pins and endson the web portion eX- tending laterally beyond the perforated portion of the vertical end flanges to admit the shoulders of the dowel-pins between such end flanges, substantially as described.

2. In a metallic curb the combination of the plurality of integral cast-iron curb-sections, each composed of a vertical web portion, inwardly-extending flanges in its upper lateral edge, inwardly and outwardly extending flanges, in its lower lateral edge, a vertical inwardly-extending flange at each end of the curb-sections provided with perforations for the insertion of the interlocking dowelpins, ends on the web portion extending laterally beyond the perforated portion of the vertical end flanges to admit the shoulders of the dowel-pins between the vertical flanges, a dowel-pin for each pair of adjacent perforations provided with a shoulder between its extending ends adapted to be held in position between the upright end flanges,substantially as d escribed.

JOHN N. HARRISON.

Witnesses:

PETER SHIRAS, JOHN P. HARRIS. 

